Content Provider
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
8
WikiBooks - Open-content textbooks
5
CONICET Digital (Consejo Nacional de Investigaciones CientÃficas y Técnicas)
3
Informa (via Crossref)
2
CEDA document repository (Centre for Environmental Data Analysis)
1
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
1
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons
1
Kharkiv National University: Electronic Archive (eKhNUIR)
1
Kingston University London: Research Repository
1
Unknown
1